package com.juvenxu.mvnbook.account.captcha;
import java.util.Random;

public class RandomGenerator{
	private static String range= "0123456789abcdefghijklmnopqrstuvwxyz";
	public static synchronized String getRandomString(){
		Random random=new Random();
		StringBuffer result=new StringBuffer();

		for(int i=0;i<8;i++){
			result.append(range.charAt(random.nextInt(range.length())));
		}
		return result.toString();
	}	
}